Quick Info: Placement of Servers in Microsoft IT Exchange Server 2010 Environment
If you have been through the Architecture and Design document published by Microsoft IT you would get some quick information on placements on Exchange Servers at Microsoft spread across for 4 datacenters…..
|
Server role |
Redmond |
Dublin |
Singapore |
Sao Paulo |
Technology |
| Mailbox |
41 |
16 |
16 |
4 |
Exchange DAGs |
| Hub Transport |
11 |
5 |
4 |
0 |
Automatic load balancing through Mail Submission Service Hardware load balancers for incoming mail connectivity |
| Client Access |
28 |
14 |
12 |
0 |
Hardware load balancers internally and externally |
| Unified Messaging |
5 |
3 |
3 |
0 |
Automatic round-robin load balancing between Unified Messaging servers Multiple voice over IP (VoIP) gateways per dial plan |
| Multiple-Role |
0 |
0 |
0 |
2 |
Not applicable |
And a quick look at the DAG Configurations….
| DAG model | Location | Number of actual mailboxes | Number of supported mailboxes | Storage architecture | Disk type |
| 11 node | Redmond |
29,913 |
33,000 |
JBOD |
3.5” 1-terabyte SAS |
| 11 node | Redmond |
28,861 |
33,000 |
JBOD |
3.5” 1-terabyte SAS |
| 10 node | Redmond |
26,171 |
30,000 |
JBOD |
3.5” 1-terabyte SAS |
| 16 node | Dublin |
33,260 |
48,000 |
JBOD |
3.5” 1-terabyte SAS |
| 16 node | Singapore |
37,698 |
48,000 |
JBOD |
3.5” 1-terabyte SAS |
| 4 node | Sao Paulo |
2,299 |
12,000 |
JBOD |
3.5” 1-terabyte SAS |
This is a good document to refer if you are designing Enterprise Messaging environments of similar sizes. Download it here http://www.microsoft.com/downloads/details.aspx?FamilyID=accec9cd-9c09-4f7e-91c6-41f0e201b680&displayLang=en
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